mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-23 02:05:57 +01:00
29 lines
756 B
C
29 lines
756 B
C
/* Dump registers that cannot be read from EL0. */
|
|
|
|
#include <stdio.h>
|
|
#include <inttypes.h>
|
|
|
|
int main(void) {
|
|
uint32_t spsr;
|
|
__asm__ ("mrs %0, spsr" : "=r" (spsr) : :);
|
|
printf("SPSR 0x%" PRIX32 "\n", spsr);
|
|
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-exception-levels */
|
|
printf("SPSR.M 0x%" PRIX32 "\n", spsr & 0xF);
|
|
|
|
#if 0
|
|
/* TODO blows up exception in EL, but works with -machine secure=on. */
|
|
uint32_t nsacr;
|
|
__asm__ ("mrc p15, 0, %0, c1, c1, 2" : "=r" (nsacr) : :);
|
|
printf("NSACR 0x%" PRIX32 "\n", nsacr);
|
|
#endif
|
|
|
|
#if 0
|
|
/* TODO blows up exception. */
|
|
uint32_t mvfr1;
|
|
__asm__ ("vmrs %0, mvfr1" : "=r" (mvfr1) : :);
|
|
printf("MVFR1 0x%" PRIX32 "\n", mvfr1);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|